winds are southwest. and they will certainly bring a different type of temperature in here. take a look at the numbers. mid 60s, a pleasant evening. nice mild south breeze that continues to blow in across maryland. but as we look to the north and west, look at these temperatures. low mid 40s out here in. st. louis detroit. this is the air mass that is moving towards us. and really make its presence felt by sunday night. even beginning tomorrow night, you are going to start to feel the change. chances for rain, you bet. two reasons. that boundary moving in . spark showers ahead of it. don't look for a lot of rain tomorrow afternoon. then, as we go from saturday into sunday, we've got a little bit of an area moisture along the coast. the carolina coast that could help generate showers through the day on sunday. so sunday we're talking temperatures struggling to get out of the 40s and low 50s.